JPF is a raster image category file format that is the successor to the .JPEG image format. Like some other file name extensions (.jpx, .jp2, .j2k), the .jpf extension refers to the JPEG 2000 image format. It is needed to designate the JPEG 2000 Image file type. And JPEG 2000 files are an international standard (ISO / IEC 15444) bitmap format. It was developed by the Joint Photographic Experts Group, JPEG. It serves as a good replacement for the JPEG standard, which is older, but, as before, is in demand and widespread. Compared to JPEG in JPF format, wavelet compression is used, due to the alpha channel transparency is supported, as well as a variety of color models. Also, compared to JPEG, this format provides better scalability of images, provides the ability to achieve smaller file sizes and have a higher level of quality. The format is able to combine compression with losses and without losses. Provides support for image transparency and additional metadata information. It can be viewed in QuickTime Player 7, as in recent versions of Photoshop, provided that the JPEG2000.8bi plugin is installed. Many images also have the extension .JP2 or .JPX.
CGM is an example of an open vector graphics format and an international standard designed to store and share graphic data. We are talking about raster and 2D vector graphics, text. CGM, that is, Computer Graphics Metafile, is a format that is designed to support the needs of various graphics applications. Any graphic element in such a file can be described both in binary and in text format. At first it was used for clip art libraries. However, the new versions, which are based on the ISO / IEC 8632 standard, have found application in automated drawing design. At the moment, the format is used in design, aviation and other technical fields. Consortium World Wide Web Consortium has developed a profile of the use of CGM on the network - WebCGM. CGM files are encoded using three methods. This is binary encoding, that is, file encoding according to the standard. Allows software products to read a file faster. Then comes character-based encryption. Provides the smallest size option, which saves disk space, and also facilitates the rapid transfer of data. The third type of encryption is text based. With it, users will be able to read and understand the contents of the file, as well as modify it using a basic text editor.